JP4542539B2 - ルートルックアップエンジン - Google Patents
ルートルックアップエンジン Download PDFInfo
- Publication number
- JP4542539B2 JP4542539B2 JP2006319441A JP2006319441A JP4542539B2 JP 4542539 B2 JP4542539 B2 JP 4542539B2 JP 2006319441 A JP2006319441 A JP 2006319441A JP 2006319441 A JP2006319441 A JP 2006319441A JP 4542539 B2 JP4542539 B2 JP 4542539B2
- Authority
- JP
- Japan
- Prior art keywords
- lookup
- route
- engine
- memory
- route lookup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/901—Indexing; Data structures therefor; Storage structures
- G06F16/9017—Indexing; Data structures therefor; Storage structures using directory or table look-up
- G06F16/902—Indexing; Data structures therefor; Storage structures using directory or table look-up using more than one table in sequence, i.e. systems with three or more layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/54—Organization of routing tables
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/64—Distributing or queueing
- H04Q3/66—Traffic distributors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13097—Numbering, addressing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13103—Memory
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13106—Microprocessor, CPU
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13141—Hunting for free outlet, circuit or channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13204—Protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13216—Code signals, frame structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/1329—Asynchronous transfer mode, ATM
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13299—Bus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/1332—Logic circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13367—Hierarchical multiplexing, add-drop multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13384—Inter-PBX traffic, PBX networks, e.g. corporate networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13389—LAN, internet
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13399—Virtual channel/circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Software Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Radio Relay Systems (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Small-Scale Networks (AREA)
Description
エレメント
タイプ : 0=葉,1=ノード
オーダ : ノードについてlog2、葉についてプレフィックス長
ポインタ : 次ノードのベースアドレスに対するポインタ(無効の場合ゼロ、または転送エントリに対するインデックス(無効の場合0xFFFFFF)
ノード
P: パリティビット。奇数パリティはハードウェアによりオプショナルにS DRAMに書込まれ、SDRAMより読取られる。
{1ビット}
T: タイプビット 0=ノード,1=葉{1ビット}
I: 間接ビット。1=間接,0=ダイレクト
{1ビット}
オーダ : 1から32に相当する次レベルのオーダ{5ビット}
RLE-Root/Flag.NHP: (ルートルックアップエンジン(RLE)根/フラ グ.次ホップポインタ):Tビットによってこのデータフィールド に対し2コンテキストが存在する。ノードの場合、次ノードポイン タ{24ビット}、または葉の場合、RLE次ホップポインタ{1 6ビット}にプリペンドされたRLEフラグ(8ビット)。
Claims (8)
- ルートルックアップエンジンであって、
少なくとも1つのネットワークに対して少なくとも1つの可変ストライドツリーを含む可変ストライドツリーメモリ、
単一の宛先、複数の宛先及び間接的なルートで構成されるグループから選択された1つの宛先に関連した次ホップインデックスを得るために、該可変ストライドツリーメモリとの通信を行い、該可変ストライドツリーメモリを1つのルートから1つの葉へ、ルートデータ及び葉データを含むブロックデータを用いてサーチするように適合したルックアップコントローラ、及び
前記ルックアップコントローラとの電気通信を行う転送プロセッサインターフェースであって、前記可変ストライドツリーのサーチを開始するためのサーチキーを供給する転送プロセッサインターフェース
からなるルートルックアップエンジン。 - 前記少なくとも1つのネットワークは仮想プライベートネットワークであることを特徴とする請求項1記載のルートルックアップエンジン。
- 前記可変ストライドツリーメモリの更新を行うために前記ルックアップコントローラと通信するプロセッサインターフェースをさらに備えた請求項1記載のルートルックアップエンジン。
- 前記転送プロセッサインターフェースと前記ルックアップコントローラに接続されたルックアップキーメモリをさらに備えた請求項1記載のルートルックアップエンジン。
- 前記ルックアップキーメモリがFIFO(先入れ先出し)メモリであることを特徴とする請求項4に記載のルートルックアップエンジン。
- 前記ルックアップコントローラと前記転送プロセッサインターフェースに接続された次ホップ結果メモリをさらに備えたことを特徴とする請求項1に記載のルートルックアップエンジン。
- 前記次ホップ結果メモリがFIFOメモリであることを特徴とする請求項6に記載のルートルックアップエンジン。
- 前記プロセッサインターフェース、前記転送プロセッサインターフェース、および前記ルックアップコントローラと通信を行う制御/ステータスレジスタを備えたことを特徴とする請求項1に記載のルートルックアップエンジン。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/459,441 US6711153B1 (en) | 1999-12-13 | 1999-12-13 | Route lookup engine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000378532A Division JP3926558B2 (ja) | 1999-12-13 | 2000-12-13 | ルートルックアップエンジン |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007110745A JP2007110745A (ja) | 2007-04-26 |
JP4542539B2 true JP4542539B2 (ja) | 2010-09-15 |
Family
ID=23824784
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000378532A Expired - Fee Related JP3926558B2 (ja) | 1999-12-13 | 2000-12-13 | ルートルックアップエンジン |
JP2006319441A Expired - Fee Related JP4542539B2 (ja) | 1999-12-13 | 2006-11-28 | ルートルックアップエンジン |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000378532A Expired - Fee Related JP3926558B2 (ja) | 1999-12-13 | 2000-12-13 | ルートルックアップエンジン |
Country Status (4)
Country | Link |
---|---|
US (1) | US6711153B1 (ja) |
EP (1) | EP1122927A3 (ja) |
JP (2) | JP3926558B2 (ja) |
CA (1) | CA2326928C (ja) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6850516B2 (en) * | 2000-03-02 | 2005-02-01 | Agere Systems Inc. | Virtual reassembly system and method of operation thereof |
US7000034B2 (en) * | 2000-03-02 | 2006-02-14 | Agere Systems Inc. | Function interface system and method of processing issued functions between co-processors |
DE10011667C2 (de) * | 2000-03-10 | 2002-11-21 | Infineon Technologies Ag | Hochgeschwindigkeits-Router |
US6798777B1 (en) | 2000-04-17 | 2004-09-28 | Juniper Networks, Inc. | Filtering and route lookup in a switching device |
US6957272B2 (en) * | 2000-05-24 | 2005-10-18 | Alcatel Internetworking (Pe), Inc. | Stackable lookup engines |
US6555511B2 (en) * | 2000-06-19 | 2003-04-29 | Lance L. Renfrow | Stable hydrotropic surfactants comprising alkylamino propionate |
US6880064B1 (en) * | 2000-06-21 | 2005-04-12 | Mosaid Technologies, Inc. | Method and apparatus for physical width expansion of a longest prefix match lookup table |
JP4225681B2 (ja) * | 2000-12-06 | 2009-02-18 | 富士通株式会社 | 仮想閉域網構築方法及び装置並びに中継装置 |
US6940854B1 (en) * | 2001-03-23 | 2005-09-06 | Advanced Micro Devices, Inc. | Systems and methods for determining priority based on previous priority determinations |
US7389360B1 (en) * | 2001-11-05 | 2008-06-17 | Juniper Networks, Inc. | Context switched route lookup key engine |
US20030174717A1 (en) * | 2002-03-15 | 2003-09-18 | Boris Zabarski | System and method for longest prefix match for internet protocol lookup |
US7493412B2 (en) | 2002-09-12 | 2009-02-17 | International Business Machines Corporation | Method for processing a data packet |
US7356033B2 (en) * | 2002-11-21 | 2008-04-08 | Lucent Technologies Inc. | Method and apparatus for performing network routing with use of power efficient TCAM-based forwarding engine architectures |
US7924839B2 (en) * | 2002-12-06 | 2011-04-12 | Stmicroelectronics, Inc. | Mechanism to reduce lookup latency in a pipelined hardware implementation of a trie-based IP lookup algorithm |
US7782853B2 (en) * | 2002-12-06 | 2010-08-24 | Stmicroelectronics, Inc. | Apparatus and method of using fully configurable memory, multi-stage pipeline logic and an embedded processor to implement multi-bit trie algorithmic network search engine |
US7620040B2 (en) * | 2002-12-11 | 2009-11-17 | Aspen Networks, Inc. | Application non disruptive task migration in a network edge switch |
DE10260604B4 (de) * | 2002-12-23 | 2006-09-21 | Infineon Technologies Ag | Multikanal-Prozessor |
KR100512949B1 (ko) * | 2003-02-28 | 2005-09-07 | 삼성전자주식회사 | 필드레벨 트리를 이용한 패킷분류장치 및 방법 |
US7702882B2 (en) * | 2003-09-10 | 2010-04-20 | Samsung Electronics Co., Ltd. | Apparatus and method for performing high-speed lookups in a routing table |
US7586911B2 (en) * | 2003-10-17 | 2009-09-08 | Rmi Corporation | Method and apparatus for packet transmit queue control |
GB0524845D0 (en) * | 2005-12-06 | 2006-01-11 | Univ Belfast | Sorting apparatus and method |
US7644343B2 (en) * | 2006-01-17 | 2010-01-05 | Rajugopal Gubbi | Error resilience methods for multi-protocol encapsulation forward error correction implementations |
CN1946052A (zh) * | 2006-10-19 | 2007-04-11 | 北京四达时代软件技术有限公司 | 单向网络视频点播的门户系统 |
WO2011078812A1 (en) * | 2009-12-22 | 2011-06-30 | Bazlamacci Cuneyt F | Systolic array architecture for fast ip lookup |
US10135734B1 (en) | 2015-12-28 | 2018-11-20 | Amazon Technologies, Inc. | Pipelined evaluations for algorithmic forwarding route lookup |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05274347A (ja) * | 1992-01-10 | 1993-10-22 | Digital Equip Corp <Dec> | アドレス知覚エンジン |
WO1996000945A1 (en) * | 1994-06-30 | 1996-01-11 | International Business Machines Corp. | Variable length data sequence matching method and apparatus |
JPH09511105A (ja) * | 1993-12-24 | 1997-11-04 | ニューブリッジ ネットワークス コーポレイション | パケット系ネットワーク用探索エンジン |
JPH11191781A (ja) * | 1997-12-25 | 1999-07-13 | Nec Corp | 経路検索回路及び通信制御装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US5842224A (en) | 1989-06-16 | 1998-11-24 | Fenner; Peter R. | Method and apparatus for source filtering data packets between networks of differing media |
AU620994B2 (en) | 1989-07-12 | 1992-02-27 | Digital Equipment Corporation | Compressed prefix matching database searching |
US5412654A (en) | 1994-01-10 | 1995-05-02 | International Business Machines Corporation | Highly dynamic destination-sequenced destination vector routing for mobile computers |
US5509123A (en) * | 1994-03-22 | 1996-04-16 | Cabletron Systems, Inc. | Distributed autonomous object architectures for network layer routing |
US5870739A (en) | 1996-09-20 | 1999-02-09 | Novell, Inc. | Hybrid query apparatus and method |
US5905725A (en) * | 1996-12-16 | 1999-05-18 | Juniper Networks | High speed switching device |
US6011795A (en) | 1997-03-20 | 2000-01-04 | Washington University | Method and apparatus for fast hierarchical address lookup using controlled expansion of prefixes |
US5946679A (en) | 1997-07-31 | 1999-08-31 | Torrent Networking Technologies, Corp. | System and method for locating a route in a route table using hashing and compressed radix tree searching |
US6266706B1 (en) * | 1997-09-15 | 2001-07-24 | Effnet Group Ab | Fast routing lookup system using complete prefix tree, bit vector, and pointers in a routing table for determining where to route IP datagrams |
US6061712A (en) | 1998-01-07 | 2000-05-09 | Lucent Technologies, Inc. | Method for IP routing table look-up |
US6052683A (en) | 1998-02-24 | 2000-04-18 | Nortel Networks Corporation | Address lookup in packet data communication networks |
US6192051B1 (en) * | 1999-02-26 | 2001-02-20 | Redstone Communications, Inc. | Network router search engine using compressed tree forwarding table |
US6463067B1 (en) * | 1999-12-13 | 2002-10-08 | Ascend Communications, Inc. | Submission and response architecture for route lookup and packet classification requests |
-
1999
- 1999-12-13 US US09/459,441 patent/US6711153B1/en not_active Expired - Lifetime
-
2000
- 2000-11-28 CA CA002326928A patent/CA2326928C/en not_active Expired - Fee Related
- 2000-12-04 EP EP00310758A patent/EP1122927A3/en not_active Ceased
- 2000-12-13 JP JP2000378532A patent/JP3926558B2/ja not_active Expired - Fee Related
-
2006
- 2006-11-28 JP JP2006319441A patent/JP4542539B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05274347A (ja) * | 1992-01-10 | 1993-10-22 | Digital Equip Corp <Dec> | アドレス知覚エンジン |
JPH09511105A (ja) * | 1993-12-24 | 1997-11-04 | ニューブリッジ ネットワークス コーポレイション | パケット系ネットワーク用探索エンジン |
WO1996000945A1 (en) * | 1994-06-30 | 1996-01-11 | International Business Machines Corp. | Variable length data sequence matching method and apparatus |
JPH11191781A (ja) * | 1997-12-25 | 1999-07-13 | Nec Corp | 経路検索回路及び通信制御装置 |
Also Published As
Publication number | Publication date |
---|---|
JP3926558B2 (ja) | 2007-06-06 |
EP1122927A3 (en) | 2004-04-14 |
EP1122927A2 (en) | 2001-08-08 |
JP2001223750A (ja) | 2001-08-17 |
US6711153B1 (en) | 2004-03-23 |
CA2326928C (en) | 2005-01-11 |
CA2326928A1 (en) | 2001-06-13 |
JP2007110745A (ja) | 2007-04-26 |
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